these 3 derivations will be built:
  /nix/store/lnm5gv6ryik91npgnnnqd21gs5jwlf2n-treefmt.toml.drv
  /nix/store/cbf9688lr1ns0qmifpf6yfs5rkk768y4-treefmt.drv
  /nix/store/98q22bviabmhgnf2r33k8ag3nk4xv22g-treefmt-check.drv